# -*- coding: utf-8 -*-#
#-------------------------------------------------------------------------------
# 建立者:        潘炎珍  
# Name:         demo04
# Description:
# Author:       98745
# Date:         2019/3/12
#-------------------------------------------------------------------------------

import matplotlib.pyplot as plt
plt.bar([1980,1985,1990,1995],[1000,3000,4000,5000],width=0.5)
plt.show()